Heater



J. H. SAWYER.

HEATER.

APPLICATIO'N FILEDMAR. 27, 1920. 1,372,198.

Patented Mar. 22,1921.

J. H. SAWYER.

HEATER. APPLICATION myeo MAR. 21. 1920. Patented Man 22, 1921 2SHEETS-SHEET 2.

UNITED STATES .JQHN H. SAWYER, OF GILMERTON, VIRGI INIA.

HEATER.

Specification of Letters Patent.

Patented Mar. 22, 1921.

Application filed March 27, 1920. Serial No. 369,289.

Gilmerton, in the county of Norfolk and State of Virginia, have inventeda new and useful Heater, of which the following is a specification.

This invention relates to new and useful improvements in heaters, andmore particularly to a novel form of portable heater especially designedfor use in cold. weather, and for application to the manifolds ofnternal combustion engines,to cause the 1ncoming gas to readilyvaporiye.

An object of the invention 1s to prov de a device of this characterhaving spring clamping means to permit the device be readily and easilyclamped to the manifold of an internal combustion engine, regard less ofthe diameter thereof. j

A further object of the invention is to provide means for controllingthe passage of heat from the casing of the heater to facilitate' the useof the heater with vertical and horizontal pipes. I

VVith the foregoingand other Ob]6 Cl3S 111 view whichwill appearasthedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what claimed, w1thout departing from the spirit of theinvention.

Referring to the draw1ngs:- D

Figure 1 illustrates a side elevatlonal view of an internal combustionengine, disclosing a device constructed in accordance with the presentinvention as applied thereto.

Fig. 2 illustrates a plan view of the heater, the clamping means beingshown n section.

Fig. 3 illustrates an end elevational view of the heater.

Fig; 4 illustrates a transverse sectional view through the same, and 0Fig. 5 illustrates a longitudinal sectional view through the casing.

Referring to the drawings in detail, the reference character 5designates the usual feed pipe of a manifold of an internal com bustionengine, andthe reference character 6 designates-the usual distributlngpipe forming a part of the manifold, and to which the heater, formingthe subject matter of the present invention is applied.

The heater includes generally the casing 7 which is formed preferably ofsheetmetal, thesame being circular 'in cross section to faclhtate thehandling of the device and to increase the efficiency thereof inapplying the same, to the manifold of an engine.

One surface of the casing 7 is substantially as indicated at S, whichflattened surface is provided with a plurality of spaced openings 9, andelongated slotted port ons 10, the slotted portions 10 providingguidways for the pins 11 carried by the slide 12, which is also providedwith openings adapted to register with the openings 9 of the flattenedsurface of the casing. to permit the heat radiating from the heatingelement, to be hereinafter more fully at scribed, to pass upwardlytherethrough.

These pins 11 are provided with heads 13 which engage the flattenedsurface of the casing adjacent to the walls of the slots 10, forsecuring the slide 12 in proper relation with the under flattenedsurface of the casing, to insure the operation of the slide. toaccomplish the regulating function.

One extremity of the casing T is open, the edges thereof being turned inas at 14, which inturned edges embrace the shoulders 15 formed on theflange 16 of the inner cylinder or casing 17, which is formed preforablyof sheet metal, and ofa diameter considerably less than the diameter ofthe casing 7 to provide the compartment 18 between the adjacent walls ofthe casing 17 and the casing 7.

Positioned in the compartment 18, is a suitable insulating materialincluding preterably asbestos indicated at 19. the asbestos being shownas positloned between the vasing and the closed end wall of the casing17, thus insulating the closed end of the casing 7, from the heatradiating from the heating element, which in operation is positioned inthe inner casing 17. j 1

One end of the inner casing ,17 is open as at 20, to permit the heatingelement 21. to be inserted therein, and this heating element ispreferably in the form of a metallic bar having a centralbore 22 topermit an iron to be inserted therein for convenience in handling.Openings 23 are formed in one of the side walls of the casing 17, whichopenings are in communication with the openings 9 of the outer casing,through the posite sides of the casing 7,

preferably of sheet metal of a resilient 'with' registering openingsthat register with suitable openings provided in the heat insulatingmaterial to permit the passage of heat through the end of the casing.

Operating adjacent the inner surface of the wall26, is a disk 29 whichis secured to the wall 26 by means of the pivot pin 30, which passesthrough the wall 26 and has connection with the disk 29 substantiallycentrally thereof, so that movement of the pin 30 will cause a relativerotary move ment of the disk 29. Formed in the disk 29, at predeterminedintervals, are a plurality of openings adapted to register with theopenings formed in the cover to provide communication between theinterior of the casing 17 and the atmosphere,that is, when the openingsof the disk are moved in registry with the aforesaid openings. If it isdesired to prevent the passage of heat through the openings in thecover, the disk 29 is moved to a position as indicated in Fig. 3v of thedrawings.

The cover isalso provided with an ex tension 31 adapted to fit withinthe open end of the casing 7 so that when the bar 21 is positionedwithin the inner casing 17, the same will be prevented fromdisplacement, by the cover. In order that the heater may be readily andeasily applied to a manifold, clamping elements 32 are provided, whichclamping elements are secured to opat points adjacent the lower edgesthereof, the upper ends of the clamping elements being curved outwardlyas at 33, and provided with openings 34 for the reception of a securingpin, not shown, which pin is to be employed should it be desired toapply the heater to a manifold, which is extremely small or one in whichthe diameter is considerably less than thedistance between the clampingelements 32.

These clamping elements 32 are formed quality, so that when the elements32 are forced over a relatively large manifold, the clamping elementswill expand and grip the manifold and hold the heater in positionthereon, by such frictional contact.

Secured to the outer casing 7, at a point oppositeto the openings 9, isa handle 35, which may be of any suitable construction which will permitthe positioning of the heater on a manifold, by grasping the handle andforcing the same into position.

In the operation of the device, the heating element 21 is subjected toheat until the same becomes sulliciently hot to accomplish the heatingresult, whereupon an iron is inserted within the bore 22 thereof, andthe heating element positioned within the easing 17. if it is desired toheat both the vertical and horizontal pipes of :1 manifold asillustrated by Fig. 1 of the drawings, the disk 29 and slide 12 aremoved so that the openings therein will register with the openings inthe cover and easing 7, respectively, whereupon the heat will radiatefrom the casing and contact with the manifold pipes to the end that thegas passing therethrough is heated.

if only one of these pipes is to be heated, the slide or disk isregulated accordingly to control the passage of heat from the easing.llhen the manifold has been heated to a predetermined degree, the heateris removed by grasping the handle, and exerting a pull thereon torelease the gripping elements thereof.

Having thus described the what I claim as new is l. A heater includingan outer casing, an inner casing disposed within the outer casing, andhaving its side walls arranged in spaced relation with the outer casing,a heat insulating material supported between the casings, said casingshaving means of communication to the atmosphere, clamping means forclamping the heater to an object, a heating medium disposed within theinner casing, and cover for closing one end of the casing.

2. A heater including an outer casing, an inner casing supported withinthe outer casing and in spaced relation therewith, a heat insulatingmaterial disposed between the casings, said casings having meansproviding communication to the atmosphere, clamping means carried by theouter casing, a heating element disposed within the iimer casing, andhaving a central bore, and a cover for the outer casing.

3. A heater including an outer casing having a relatively flat surfaceforming a part thereof, said relatively flat surface having a pluralityof openings formed therein, a sliding plate supported under therelatively flat surface and having openings adapted to register with thefirst mentioned openings, a cover positioned on the easing and havingopenings extending therethrough, means for controlling the passage ofheat through the cover, clamping meahs carried by the casing, and aheating element. disposed within the casing.

4: A manifold heater including an outer casing, an inner casingpositioned within invention,

the outer casing a heating element disposed within the inner casing,means it'or insulating the inner casing from the outer casing, saidcasings having means for providing communication therewith to theatmosphere, a heating element disposed within the inner casing, andmeans to permit the heater to he detachably applied to the manifold.

5. A manitold'heater including an outer casing and an inner casing, heatinsulating means disposed between the casings, said casings havingregistering openings, a cover having openings providing communicationbetween the interior of the inner casing and the atmosphere, means forregulating the 15 passage of heat through the openings, and means topermit the heater to be detachably connected to the manifold.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signa- 20 ture in the presence of two witnesses.

JOHN H. SAWYER.

Witnesses -V. P. ELLIs,

Geo. K. MCMURRAN.

